Jaegwon Kim (1934-2019) was one of the most influential metaphysicians and philosophers of mind in the last third of the Twentieth Century and early Twenty-First Century. In metaphysics, he did pioneering work on events, supervenience, emergence, higher-level causation, properties, and the metaphysics of  the special sciences. His highly influential work in the philosophy of mind centered around the mind-body problem. This special issue of ProtoSociology is in his honor.